NOIJTIT AMERICAN COLEOPTERA. 207 



Abdomen moderately convex, more feebly punctured, the pubescence as long as 

 on the elytra, first segment as long as one-third its width, the lateral reflexed 

 margin not broader and the lateral basal impression much larger than in B. ru- 

 bicunda, the basal striaj strongly divergent more than half as long as the segment, 

 including at base a space not broader than between the sutural striaj of the 

 elytra; behind the intermediate coxse on the metasternum is a deep, sharply 

 defined fovea. Legs and antennae ferruginous, palpi i)aler. % antenna> longer, 

 elytra less convex, punctuation and pubescence stronger, intermediate tibise 

 spurred, first ventral near the posterior margin transversely impressed, last ven- 

 tral with a somewhat transverse, nearly circular, well defined, but not deep im- 

 pression. Length 1.5 mm. 



From Canada. Differentials are : the strong punctuation, the long, 

 divergent and very appropriate abdominal stria3. 



Contrasting the former species, I give here the description of B. 

 (jemmifer Lee, Avhich was only presented in a synopsis. 



B. geinmiftM* Lee. — Ferruginous to red-brown or darker, pubescence very 

 fine and short. Head from base to frontal margin as long as the width across the 

 genfe, impunctate, except on the antennal tubercles, fovea equal in size, small, 

 mutually twice as distant as either from the eye and in a line with them : frontal 

 margin slightly convex, antennal tubercles small, but well defined, space bearing 

 the frontal fovea slightly concave. Eyes longer than the genae, gemmate ; an- 

 tennae half as long as the body, second joint as long as the first, not as thick ; 

 3d longer than the 2d, obconical-cylindrical, thinner; 3d to 7th cylindrical, sub- 

 equal ; 8th as thick as the 7th, of equal dimensions ; 9th little longer and thicker, 

 obconical ; 10th subglobular, larger ; 11th nearly double as thick as the 10th, in 

 length equal to the three preceding conjointly, from the middle strongly conical 

 and somewhat obliquely behind the middle, more convex than in B. rubicunda ; 

 middle foveae small, deep, conspicuous, lateral ones not larger than the occipital 

 fovefe not fully in view from above and situated one third from the base ; disk 

 conspicuously punctulate (magnified 30 diameters) ; base double as wide as the 

 anterior margin. Elytra across the shoulders wider than the prothorax, sides 

 arcuate behind the middle, where the disk is one-fourth wider than the length 

 of the suture, convex ; tip and sides very declivous, posterior margin laterally 

 slightly sinuate; disk (magnified 60 diameters) scarcely perceptibly punctulate. 

 except on the posterior declivity, where it is distinctly punctured ; sutural lines 

 convergent from behind the middle to a spinous sharp point on each elytron ; 

 discal lines strictly parallel and but slightly convergent near the tip; basal fovea 

 small and near the base. Abdomen not punctured, first segment not longer than 

 one-fourth its width, striae very short, one-sixth of the length of the segment, 

 very divergent and not further apart than the elytral sutural lines ; last ventral 

 punctured. % last ventral inside of a nearly circular space rather flattened, but 

 not impressed. Length 1.3-1.4 mm. 



There are varieties in color and the strength of the punctuation of 

 the prothorax and elytra. 



This seems to be the most common species in Iowa. It differs from 

 congener and ruhicunda by the punctuation of the prothoi-nx, the 



